Alert archive / Colorado / Red Flag Warnings in 2016
Red Flag Warning 23, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this red flag warning at Sep 10, 2016, 2:39 PM MDT for 5 counties in Colorado. It took effect at Sep 11, 2016, 12:00 PM MDT. It was in force for 7 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Sep 10, 2016, 2:39 PM MDT (20:39 UTC)
- In effect from
- Sep 11, 2016, 12:00 PM MDT
- Expired
- Sep 11, 2016, 7:00 PM MDT
- In force
- 7 hr
- Issued by
- NWS Denver/Boulder, CO
Counties Boulder County, CO, Grand County, CO, Jackson County, CO, Larimer County, CO, Summit County, CO
The radar
The Denver radar (KFTG), 124 km from the middle of the area, began a volume at 20:38 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Denver, CO (KDEN), launched 12:00Z, 8.7 hours before the alert went out and 229 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1524 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 57 m²/s²
- 0-3 km storm-relative helicity
- 72 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
097 WWUS85 KBOU 102039 RFWBOU URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER/BOULDER CO 239 PM MDT SAT SEP 10 2016 COZ211-215-110445- /O.UPG.KBOU.FW.A.0008.160911T1800Z-160912T0100Z/ /O.NEW.KBOU.FW.W.0023.160911T1800Z-160912T0100Z/ JACKSON COUNTY BELOW 9000 FEET- LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET- 239 PM MDT SAT SEP 10 2016 ...RED FLAG WARNING IN EFFECT FROM NOON TO 7 PM MDT SUNDAY FOR WIND...LOW RELATIVE HUMIDITY AND DRY FUELS FOR NORTH PARK AND THE NORTHERN FRONT RANGE FOOTHILLS... THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A RED FLAG WARNING FOR WIND...LOW RELATIVE HUMIDITY AND DRY FUELS...WHICH IS IN EFFECT FROM NOON TO 7 PM MDT SUNDAY. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. * AFFECTED AREA...FIRE WEATHER ZONES 211 AND 215. * TIMING...NOON UNTIL 7PM. * WINDS...WEST 15 TO 25 MPH WITH GUSTS UP TO 40 MPH. * RELATIVE HUMIDITY...AS LOW AS 11 PERCENT. * IMPACTS...DUE TO DRY CONDITIONS AND INCREASING WINDS EVERYONE SHOULD BE VERY CAREFUL WITH CAMPFIRES AND ANYTHING CAPABLE OF SPARKING. LARGE FIRES COULD RESULT FROM CARELESSNESS OR INATTENTION. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW....OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES CAN CONTRIBUTE TO EXTREME FIRE BEHAVIOR. && $$ COZ213-110445- /O.NEW.KBOU.FW.W.0023.160911T1800Z-160912T0100Z/ GRAND AND SUMMIT COUNTIES BELOW 9000 FEET- 239 PM MDT SAT SEP 10 2016 ...RED FLAG WARNING IN EFFECT FROM NOON TO 7 PM MDT SUNDAY FOR WIND...LOW RELATIVE HUMIDITY AND DRY FUELS FOR MIDDLE PARK... THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A RED FLAG WARNING FOR WIND...LOW RELATIVE HUMIDITY AND DRY FUELS...WHICH IS IN EFFECT FROM NOON TO 7 PM MDT SUNDAY. * AFFECTED AREA...FIRE WEATHER ZONE 213. * TIMING...NOON TO 7 PM. * WINDS...WEST 10 TO 20 MPH WITH GUSTS UP TO 35 MPH. * RELATIVE HUMIDITY...AS LOW AS 13 PERCENT. * IMPACTS...DUE TO DRY CONDITIONS AND INCREASING WINDS EVERYONE SHOULD BE VERY CAREFUL WITH CAMPFIRES AND ANYTHING CAPABLE OF SPARKING. LARGE FIRES COULD RESULT FROM CARELESSNESS OR INATTENTION. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW....OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES CAN CONTRIBUTE TO EXTREME FIRE BEHAVIOR. && $$
4 follow-up statements
922 WWUS85 KBOU 110404 RFWBOU URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER/BOULDER CO 1004 PM MDT SAT SEP 10 2016 ...CRITICAL FIRE WEATHER CONDITIONS EXPECTED SUNDAY... .POOR HUMIDITY RECOVERY IS EXPECTED TONIGHT OVER THE NORTHERN MOUNTAINS AND HIGH VALLEYS AS WELL AS THE NORTHERN FOOTHILLS WITH GUSTY DOWNSLOPE WEST WINDS. HUMIDITY VALUES MAY ONLY TOP OUT AROUND 25 TO 35 PERCENT. STRONGER WINDS OF UP TO 40 MPH WILL SPREAD ACROSS THE REGION SUNDAY WITH HUMIDITY VALUES DROPPING INTO THE LOW TEENS. COZ211-213-215-111215- /O.CON.KBOU.FW.W.0023.160911T1800Z-160912T0100Z/ JACKSON COUNTY BELOW 9000 FEET- GRAND AND SUMMIT COUNTIES BELOW 9000 FEET- LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET- 1004 PM MDT SAT SEP 10 2016 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 7 PM MDT SUNDAY FOR WIND...LOW RELATIVE HUMIDITY AND DRY FUELS FOR NORTH PARK...MIDDLE PARK AND THE NORTHERN FRONT RANGE FOOTHILLS... * AFFECTED AREA...FIRE WEATHER ZONES 211...213 AND 215. * TIMING...NOON TO 7 PM. * WINDS...WEST 15 TO 25 MPH WITH GUSTS UP TO 40 MPH. * RELATIVE HUMIDITY...AS LOW AS 10 PERCENT. * IMPACTS...DUE TO DRY CONDITIONS AND INCREASING WINDS...EVERYONE SHOULD BE VERY CAREFUL WITH CAMPFIRES AND ANYTHING CAPABLE OF PRODUCING A SPARK. LARGE FIRES COULD RESULT FROM CARELESSNESS OR INATTENTION AND SPREAD RAPIDLY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW....OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES CAN CONTRIBUTE TO EXTREME FIRE BEHAVIOR. && $$
519 WWUS85 KBOU 111129 RFWBOU URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER/BOULDER CO 529 AM MDT SUN SEP 11 2016 ...CRITICAL FIRE WEATHER CONDITIONS EXPECTED THIS AFTERNOON... .RELATIVE HUMIDITY VALUES OVER THE NORTHERN MOUNTAINS AND HIGH VALLEYS REMAINED BELOW 50 PERCENT OVERNIGHT AS DRY AIR REMAINED OVER COLORADO. VERY WARM TEMPERATURES ARE EXPECTED THIS AFTERNOON ALONG WITH INCREASING WINDS UP TO 35 MPH. RELATIVE HUMIDITY LEVELS MAY DROP TO AS LOW AS 10 PERCENT. DANGEROUS FIRE BEHAVIOR WILL BE POSSIBLE THIS AFTERNOON DUE TO THE COMBINATION OF DRY FUELS, WARM TEMPERATURES AND GUSTY WINDS. COZ211-213-215-111930- /O.CON.KBOU.FW.W.0023.160911T1800Z-160912T0100Z/ JACKSON COUNTY BELOW 9000 FEET- GRAND AND SUMMIT COUNTIES BELOW 9000 FEET- LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET- 529 AM MDT SUN SEP 11 2016 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR NORTH PARK... MIDDLE PARK AND THE NORTHERN FRONT RANGE FOOTHILLS... * AFFECTED AREA...FIRE WEATHER ZONES 211...213 AND 215. * TIMING...NOON TO 7 PM. * WINDS...WEST 15 TO 25 MPH WITH GUSTS UP TO 35 MPH. * RELATIVE HUMIDITY...10-14 PERCENT. * IMPACTS...DUE TO DRY CONDITIONS AND INCREASING WINDS...EVERYONE SHOULD BE VERY CAREFUL WITH CAMPFIRES AND ANYTHING CAPABLE OF PRODUCING A SPARK. LARGE FIRES COULD RESULT FROM CARELESSNESS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW....OR WILL SHORTLY. THE COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL MAKE IT POSSIBLE FOR EXTREME FIRE BEHAVIOR. && $$
485 WWUS85 KBOU 111743 RFWBOU URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER/BOULDER CO 1143 AM MDT SUN SEP 11 2016 ...CRITICAL FIRE WEATHER CONDITIONS EXPECTED THIS AFTERNOON... RELATIVE HUMIDITY VALUES ARE IN THE 10-15 PCT RANGE IN THE WARNED AREA AND EXPECTED TO REMAIN THAT LOW ALL AFTERNOON. VERY WARM TEMPERATURES ARE OCCURING AND WILL CONTINUE THIS AFTERNOON ALONG WITH INCREASING WEST WINDS UP TO 30 MPH WITH HIGHER GUSTS LIKELY. DANGEROUS FIRE BEHAVIOR WILL BE POSSIBLE THIS AFTERNOON DUE TO THE COMBINATION OF DRY FUELS...WARM TEMPERATURES AND GUSTY WINDS. COZ211-213-215-120100- /O.CON.KBOU.FW.W.0023.160911T1800Z-160912T0100Z/ JACKSON COUNTY BELOW 9000 FEET- GRAND AND SUMMIT COUNTIES BELOW 9000 FEET- LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET- 1143 AM MDT SUN SEP 11 2016 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR NORTH PARK...MIDDLE PARK AND THE NORTHERN FRONT RANGE FOOTHILLS... * AFFECTED AREA...FIRE WEATHER ZONES 211...213 AND 215. * TIMING...NOON TO 7 PM. * WINDS...WEST 20 TO 30 MPH WITH GUSTS UP TO 45 MPH. * RELATIVE HUMIDITY...AS LOW AS 10 PERCENT. * IMPACTS...DUE TO DRY CONDITIONS AND INCREASING WINDS... EVERYONE SHOULD BE VERY CAREFUL WITH CAMPFIRES AND ANYTHING CAPABLE OF PRODUCING A SPARK. LARGE FIRES COULD RESULT FROM CARELESSNESS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW....OR WILL SHORTLY. THE COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL MAKE IT POSSIBLE FOR EXTREME FIRE BEHAVIOR. && $$
265 WWUS85 KBOU 120117 RFWBOU URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER/BOULDER CO 717 PM MDT SUN SEP 11 2016 COZ211-213-215-120230- /O.EXP.KBOU.FW.W.0023.000000T0000Z-160912T0100Z/ JACKSON COUNTY BELOW 9000 FEET- GRAND AND SUMMIT COUNTIES BELOW 9000 FEET- LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET- 717 PM MDT SUN SEP 11 2016 ...RED FLAG WARNING HAS EXPIRED FOR WIND AND LOW RELATIVE HUMIDITY FOR NORTH PARK AND MIDDLE PARK...AND THE NORTHERN FRONT RANGE FOOTHILLS...FIRE WEATHER ZONES 211...213...AND 215... WINDS HAVE DECREASED SLIGHTLY AND HUMIDITIES ARE SLOWLY IMPROVING THIS EVENING. THERE WILL STILL BE A FEW PERIODS OF GUSTY WINDS TO 25 MPH OVERNIGHT...AND ONLY MODERATE HUMIDITY RECOVERY IS EXPECTED IN THE FRONT RANGE FOOTHILLS. $$
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 10, 2:49 AM MDT | Fire Weather Watch | BOU | Boulder, Jackson, Larimer | 12 hr |
Nearby
Red Flag Warnings in Colorado, 2016Every red flag warning in 2016
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.